World pound-for-pound queen contender Claressa Shields has threatened to "kill" Hartlepool boxer Savannah Marshall, as she touts a potential bout between the pair.

Shields became undisputed middleweight champion in the early hours of Sunday morning, ending the 10-year reign of Christina Hammer.

And one of her first acts after claiming the win was to call out Marshall in her post-fight interview.

"I’ll go to the UK and beat Savannah Marshall," said Shields, of the 5-0 former Headland ABC fighter..

"Bring me her. Bring her to me. I’ll kill her."

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Marshall is the only fighter in the amateur or professional ranks to claim a win over Flint-born, former USA Olympian Shields.

That win came back in the 2012 World Championships in Qinhuangdao, China. Marshall claiming a convincing 14-8 victory.

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